<template>
	<div class="player" v-show="playlist.length>0 && !showLogin">
		<transition name="normal" @enter="enter" @after-enter="afterEnter" @leave="leave" @after-leave="afterLeave">
			<div class="normal-player" v-show="fullScreen">
				<div class="background">
					<img width="100%" height="100%" :src="currentSong.localImage||currentSong.image">
				</div>
				<div class="top">
					<div class="back" @click="back">
						<i class="icon-back"></i>
					</div>
					<h1 class="title" v-html="currentSong.name"></h1>
					<h2 class="subtitle" v-html="currentSong.singer"></h2>
				</div>
				<div class="middle" 
					@touchstart.prevent="middleTouchStart"
             		@touchmove.prevent="middleTouchMove"
             		@touchend="middleTouchEnd"
				>
					<div class="middle-l" ref="middleL">
						<div class="cd-wrapper" ref="cdWrapper">
							<div class="cd" :class="cdCls">
								<img class="image" :src="currentSong.localImage||currentSong.image">
							</div>
						</div>
						<div class="playing-lyric-wrapper">
		              		<div class="playing-lyric">{{playingLyric}}</div>
		            	</div>
					</div>
					<Scroll class="middle-r" ref="lyricList" :data="currentLyric && currentLyric.lines">
						<div class="lyric-wrapper">
			              	<div v-if="currentLyric">
			                	<p ref="lyricLine" class="text" :class="{'current': currentLineNum ===index}" v-for="(line,index) in currentLyric.lines">{{line.txt}}</p>
			              </div>
			            </div>
					</Scroll>
					
				</div>
				<div class="bottom">
					<div class="dot-wrapper">
						<div class="dot" :class="{active:currentShow == 'cd'}"></div>
						<div class="dot" :class="{active:currentShow == 'lyric'}"></div>
					</div>
					<div class="progress-wrapper">
						<span class="time time-l">{{format(currentTime)}}</span>
						<div class="progress-bar-wrapper">
							<progress-bar :percent="percent" @percentChange="onProgressBarChange"></progress-bar>
						</div>
						<span class="time time-r">{{format(currentSong.duration)}}</span>
					</div>
					<div class="operators">
						<div class="icon i-left" @click="changeMode">
							<i :class="iconMode"></i>
						</div>
						<div class="icon i-left" :class="disableCls">
							<i @click="prev" class="icon-prev"></i>
						</div>
						<div class="icon i-center" :class="disableCls">
							<i @click="togglePlaying" :class="playIcon"></i>
						</div>
						<div class="icon i-right" :class="disableCls">
							<i @click="next" class="icon icon-next"></i>
						</div>
						<div class="icon i-right">
							<i style="font-size: 25px" class="icon" @click="toggleFavorite(currentSong)" :class="favoriteFlag ? 'icon-favorite' : 'icon-not-favorite'"></i>
						</div>
					</div>
				</div>
			</div>
		</transition>
		<transition name="mini">
			<div class="mini-player" v-show="!fullScreen" @click="open">
				<div class="icon">
					<img :class="cdCls" width="40" height="40" :src="currentSong.localImage || currentSong.image">
				</div>
				<div class="text">
					<h2 class="name" v-html="currentSong.name"></h2>
					<p class="desc" v-html="currentSong.singer"></p>
				</div>
				<div class="control">
					<progress-circle :radius="radius" :percent="percent">
            			<i @click.stop="togglePlaying" class="icon-mini" :class="miniIcon"></i>
          			</progress-circle>
				</div>
				<div class="control" @click.stop="showPlaylist">
					<i class="icon-playlist"></i>
				</div>
			</div>
		</transition>
		<playlist ref="playlist"></playlist>
		<audio 
			@timeupdate="updateTime" 
			:src="audioSrc" 
			ref="audio" 
			@play="ready" 
			@error="error"
			@ended="end"
		>
			<source :src="audioSrc" type="audio/ogg">
			<source :src="audioSrc" type="audio/ogg">
		</audio>
	</div>
</template>

<script type="text/ecmascript-6">
	import { mapGetters, mapMutations, mapActions } from 'vuex'
	import animations from 'create-keyframe-animation'
	import { prefixStyle } from 'common/js/dom';
	import { getSingleSong } from 'api/player'
	import ProgressBar from 'base/progress-bar/progress-bar'
	import ProgressCircle from 'base/progress-circle/progress-circle'
	import {playMode} from 'common/js/config'
	import {shuffle,getValue} from 'common/js/util'
	import Lyric from 'lyric-parser'
	import Scroll from 'base/scroll/scroll'
	import {playerMixin} from 'common/js/mixin'
	import Playlist from 'components/playlist/playlist'
	import {addFavorite,queryFavorite,deleteFavorite,setRecord} from "api/song";
	const transform = prefixStyle('transform')
	const transitionDuration = prefixStyle('transitionDuration')

	export default {
		mixins: [playerMixin],
		data() {
			return {
				songReady: false,
				currentTime: 0,
				radius: 32,
				currentLyric: null,
				currentLineNum: 0,
				currentShow: 'cd',
				playingLyric: '',
				audioSrc: '',
				favoriteFlag:false
			}
		},
		computed: {
			cdCls() {
				return this.playing ? 'play' : 'play pause'
			},
			playIcon() {
				return this.playing ? 'icon-pause' : 'icon-play'
			},
			iconMode(){
				return this.mode === playMode.sequence ? 'icon-sequence' : (this.mode === playMode.loop ? 'icon-loop' : 'icon-random')
			},
			miniIcon() {
				return this.playing ? 'icon-pause-mini' : 'icon-play-mini'
			},
			disableCls() {
				return this.songReady ? '' : 'disable'
			},
			percent() {
				return this.currentTime / this.currentSong.duration
			},
			...mapGetters([
				'currentIndex',
        		'fullScreen',
				'playing',
				"userData",
				"showLogin"
			])
		},
		created() {
			this.touch = {}
		},
		mounted(){
//			this.parse()
		},
		
		methods: {
			back() {
				this.setFullScreen(false)
			},
			open() {
				this.setFullScreen(true)
			},
			enter(el, done) {
				const {
					x,
					y,
					scale
				} = this._getPosAndScale()

				let animation = {
					0: {
						transform: `translate3d(${x}px,${y}px,0) scale(${scale})`
					},
					60: {
						transform: `translate3d(0,0,0) scale(1.1)`
					},
					100: {
						transform: `translate3d(0,0,0) scale(1)`
					}
				}

				animations.registerAnimation({
					name: 'move',
					animation,
					presets: {
						duration: 400,
						easing: 'linear'
					}
				})

				animations.runAnimation(this.$refs.cdWrapper, 'move', done)
			},
			afterEnter() {
				animations.unregisterAnimation('move')
				this.$refs.cdWrapper.style.animation = ''
			},
			leave(el, done) {
				this.$refs.cdWrapper.style.transition = 'all 0.4s'
				const {
					x,
					y,
					scale
				} = this._getPosAndScale()
				this.$refs.cdWrapper.style[transform] = `translate3d(${x}px,${y}px,0) scale(${scale})`
				this.$refs.cdWrapper.addEventListener('transitionend', done)
			},
			afterLeave() {
				this.$refs.cdWrapper.style.transition = ''
				this.$refs.cdWrapper.style[transform] = ''
			},
			togglePlaying() {
				if(!this.songReady) {
					return
				}
				this.setPlayingState(!this.playing)
				if (this.currentLyric) {
				    this.currentLyric.togglePlay()
				}
			},
			end() {
				if (this.mode === playMode.loop) {
				    this.loop()
				} else {
				    this.next()
				}
			},
			loop() {
				this.$refs.audio.currentTime = 0
				this.$refs.audio.play()
				this.setPlayingState(true)
				if (this.currentLyric) {
				    this.currentLyric.seek(0)
				}
			},
			next() {
				if(!this.songReady) {
					return
				}
				if (this.playlist.length === 1) {
				    this.loop()
				    return
				} else {
					let index = this.currentIndex + 1
					if(index === this.playlist.length) {
						index = 0
					}
					this.setCurrentIndex(index)
					if(!this.playing) {
						this.togglePlaying()
					}
				}
				this.songReady = false
			},
			prev() {
				if(!this.songReady) {
					return
				}
		      	if (this.playlist.length === 1) {
		        		this.loop()
		        		return
		      	} else {
					let index = this.currentIndex - 1
					if(index === -1) {
						index = this.playlist.length - 1
					}
					this.setCurrentIndex(index);
					
					if(!this.playing) {
						this.togglePlaying()
					}
				}
				this.songReady = false
			},
			ready() {
				this.songReady = true
				this.savePlayHistory(this.currentSong)
			},
			error() {
				this.songReady = true
			},
			updateTime(e) {
				this.currentTime = e.target.currentTime
			},
			format(interval) {
				interval = interval | 0
				const minute = interval / 60 | 0
				const second = this._pad(interval % 60)
				return `${minute}:${second}`
			},
			onProgressBarChange(percent) {
		      	const currentTime = this.currentSong.duration * percent
		      	this.$refs.audio.currentTime = currentTime
		      	if (!this.playing) {
		        	this.togglePlaying()
		      	}
		      	if (this.currentLyric) {
		        	this.currentLyric.seek(currentTime * 1000)
		      	}
			},
			getLyric() {
                this.currentSong.getLyric().then((lyric) => {
                    if (this.currentSong.lyric !== lyric) {
                        return
                    }
                    this.currentLyric = new Lyric(lyric, this.handleLyric)
                    if (this.playing) {
                        this.currentLyric.play()
                    }
                }).catch(() => {
                    this.currentLyric = null
                    this.playingLyric = ''
                    this.currentLineNum = 0
                })
			},
			handleLyric({lineNum,txt}) {
				this.currentLineNum = lineNum
				if (lineNum > 5) {
				    let lineEl = this.$refs.lyricLine[lineNum - 5]
				    this.$refs.lyricList.scrollToElement(lineEl, 1000)
				} else {
				    this.$refs.lyricList.scrollTo(0, 0, 1000)
				}
				this.playingLyric = txt
			},
			showPlaylist() {
				this.$refs.playlist.show()
			},
			middleTouchStart(e) {
				this.touch.initiated = true
				// 用来判断是否是一次移动
				// this.touch.moved = false
				const touch = e.touches[0]
				this.touch.startX = touch.pageX
				this.touch.startY = touch.pageY
			},
			middleTouchMove(e) {
				if (!this.touch.initiated) {
				    return
				}
				const touch = e.touches[0]
				const deltaX = touch.pageX - this.touch.startX
				const deltaY = touch.pageY - this.touch.startY
				if (Math.abs(deltaY) > Math.abs(deltaX)) {
				    return
				}
			    if (!this.touch.moved) {
			        this.touch.moved = true
			    }
				const left = this.currentShow === 'cd' ? 0 : -window.innerWidth
				const offsetWidth = Math.min(0, Math.max(-window.innerWidth, left + deltaX))
				this.touch.percent = Math.abs(offsetWidth / window.innerWidth)
				this.$refs.lyricList.$el.style[transform] = `translate3d(${offsetWidth}px,0,0)`
				this.$refs.lyricList.$el.style[transitionDuration] = 0
				this.$refs.middleL.style.opacity = 1 - this.touch.percent
				this.$refs.middleL.style[transitionDuration] = 0
			},
			middleTouchEnd() {
				if (!this.touch.moved) {
				    return
				}
				let offsetWidth
				let opacity
				if (this.currentShow === 'cd') {
				    if (this.touch.percent > 0.1) {
				        offsetWidth = -window.innerWidth
				          	opacity = 0
				          	this.currentShow = 'lyric'
					} else {
				        offsetWidth = 0
				        opacity = 1
					}
				} else {
				    if (this.touch.percent < 0.9) {
				        offsetWidth = 0
				        this.currentShow = 'cd'
				        opacity = 1
				    } else {
				        offsetWidth = -window.innerWidth
				        opacity = 0
				    }
				}
				const time = 300
				this.$refs.lyricList.$el.style[transform] = `translate3d(${offsetWidth}px,0,0)`
				this.$refs.lyricList.$el.style[transitionDuration] = `${time}ms`
				this.$refs.middleL.style.opacity = opacity
				this.$refs.middleL.style[transitionDuration] = `${time}ms`
				this.touch.initiated = false
			},
			
			_pad(num, n = 2) {
				let len = num.toString().length
				while (len < n) {
				    num = '0' + num
				    len++
				}
				return num
			},
			_getPosAndScale() {
				const targetWidth = 40
				const paddingLeft = 40
				const paddingBottom = 30
				const paddingTop = 80
				const width = window.innerWidth * 0.8
				const scale = targetWidth / width
				const x = -(window.innerWidth / 2 - paddingLeft)
				const y = window.innerHeight - paddingTop - width / 2 - paddingBottom
				return {
					x,
					y,
					scale
				}
			},
			async toggleFavorite(params) {
                if (this.userData.userId) {
                    if (this.favoriteFlag) {//如果已经收藏过，点击之后取消收藏
                        let result = await deleteFavorite(params)
                        if (result.data.affectedRows == 1) {
                            this.favoriteFlag = false;
                        }
                    } else {
                        await addFavorite(params);
                        this.favoriteFlag = true;
                    }

                } else {
                    this.setShowLogin(true);
                }

            },
			...mapMutations({
				setFullScreen: 'SET_FULL_SCREEN',
			}),
		    ...mapActions([
			  'savePlayHistory',
			  "setShowLogin"
		    ])
		},
		watch: {
			async currentSong(newSong, oldSong) {
                if (newSong.id == oldSong.id) {
                    return
                }
                queryFavorite({mid: newSong.mid}).then((result)=>{
                    this.favoriteFlag = result.data > 0 ? true : false
                });
                var _this = this;
                if (this.currentLyric) {
                    this.currentLyric.stop()
                    this.currentTime = 0
                    this.playingLyric = ''
                    this.currentLineNum = 0
                }
                ;
                if (newSong.url) {//如果歌曲的url存在就直接赋值
                    if (newSong.playMode == "qq") {
                        this.audioSrc = newSong.url;
                    } else if (newSong.playMode == "kugou") {
                        this.audioSrc = newSong.kugouUrl;
                    } else if (newSong.playMode == "local") {
                        this.audioSrc = newSong.localUrl;
                    } else if (newSong.playMode == "other") {
                        this.audioSrc = newSong.otherUrl
                    }
                    if (_this.timer) clearTimeout(_this.timer)
                    _this.timer = setTimeout(() => {
                        _this.$refs.audio.play();
                        _this.getLyric()
                    }, 1000);
                    setRecord({...newSong, userId: this.userData.userId})//记录播放次数
                } else {
                    let item = await getSingleSong(newSong.mid);
                    var purl = getValue(item, ["data", "req_0", "data", "midurlinfo", "0", "purl"])
                    this.audioSrc = "http://isure.stream.qqmusic.qq.com/" + purl;
                    var url = purl ? this.audioSrc : "";
                    if (_this.timer) clearTimeout(_this.timer)
                    _this.timer = setTimeout(() => {
                        _this.$refs.audio.play();
                        _this.getLyric()
                    }, 1000);
                    newSong.url = url;
                    setRecord({...newSong, userId: this.userData.userId, url})//记录播放次数
                }
            },
			playing(newPlaying) {
				const audio = this.$refs.audio
				this.$nextTick(() => {
					newPlaying ? audio.play() : audio.pause()
				})
			},
			fullScreen(newVal) {
		      	if (newVal) {
		        	setTimeout(() => {
		          		this.$refs.lyricList.refresh()
		        	}, 20)
		      	}
			},
			
		},
		components: {
			ProgressBar,
			ProgressCircle,
			Scroll,
			Playlist,
		}
	}
</script>

<style scoped lang="less">
@import "~common/less/variable.less";
@import "~common/less/mixin.less";

.player {
  .normal-player {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 150;
    background: @color-background;
    .background {
      position: absolute;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      z-index: -1;
      opacity: 0.6;
      filter: blur(20px);
    }
    .top {
      position: relative;
      margin-bottom: 25px;
      .back {
        position: absolute;
        top: 0;
        left: 6px;
        z-index: 50;
        .icon-back {
          display: block;
          padding: 9px;
          font-size: @font-size-large-x;
          color: @color-theme;
          transform: rotate(-90deg);
        }
      }
      .title {
        width: 70%;
        margin: 0 auto;
        line-height: 40px;
        text-align: center;
        .no-wrap();
        font-size: @font-size-large;
        color: @color-text;
      }
      .subtitle {
        line-height: 20px;
        text-align: center;
        font-size: @font-size-medium;
        color: @color-text;
      }
    }
    .middle {
      position: fixed;
      width: 100%;
      top: 80px;
      bottom: 170px;
      white-space: nowrap;
      font-size: 0;
      .middle-l {
        display: inline-block;
        vertical-align: top;
        position: relative;
        width: 100%;
        height: 0;
        padding-top: 80%;
        .cd-wrapper {
          position: absolute;
          left: 10%;
          top: 0;
          width: 80%;
          height: 100%;
          .cd {
            width: 100%;
            height: 100%;
            box-sizing: border-box;
            border: 10px solid rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            &.play {
              animation: rotate 20s linear infinite;
            }
            &.pause {
              animation-play-state: paused;
            }
            .image {
              position: absolute;
              left: 0;
              top: 0;
              width: 100%;
              height: 100%;
              border-radius: 50%;
            }
          }
        }

        .playing-lyric-wrapper {
          width: 80%;
          margin: 30px auto 0 auto;
          overflow: hidden;
          text-align: center;
          .playing-lyric {
            height: 20px;
            line-height: 20px;
            font-size: @font-size-medium;
            color: @color-text-l;
          }
        }
      }

      .middle-r {
        display: inline-block;
        vertical-align: top;
        width: 100%;
        height: 100%;
        overflow: hidden;
        .lyric-wrapper {
          width: 80%;
          margin: 0 auto;
          overflow: hidden;
          text-align: center;
          .text {
            line-height: 32px;
            color: @color-text-l;
            font-size: @font-size-medium;
            &.current {
              color: @color-text;
            }
          }
        }
      }
    }

    .bottom {
      position: absolute;
      bottom: 50px;
      width: 100%;
      .dot-wrapper {
        text-align: center;
        font-size: 0;
        .dot {
          display: inline-block;
          vertical-align: middle;
          margin: 0 4px;
          width: 8px;
          height: 8px;
          border-radius: 50%;
          background: @color-text-l;
          &.active {
            width: 20px;
            border-radius: 5px;
            background: @color-text-ll;
          }
        }
      }
      .progress-wrapper {
        display: flex;
        align-items: center;
        width: 80%;
        margin: 0px auto;
        padding: 10px 0;
        .time {
          color: @color-text;
          font-size: @font-size-small;
          flex: 0 0 30px;
          line-height: 30px;
          width: 30px;
          &.time-l {
            text-align: left;
          }
          &.time-r {
            text-align: right;
          }
        }
        .progress-bar-wrapper {
          flex: 1;
        }
      }
      .operators {
        display: flex;
        align-items: center;
        .icon {
          flex: 1;
          color: @color-theme;
          &.disable {
            color: @color-theme-d;
          }
          i {
            font-size: 30px;
          }
        }
        .i-left {
          text-align: right;
        }
        .i-center {
          padding: 0 20px;
          text-align: center;
          i {
            font-size: 40px;
          }
        }
        .i-right {
          text-align: left;
        }
        .icon-favorite {
          color: @color-sub-theme;
        }
      }
    }
    &.normal-enter-active, &.normal-leave-active {
      transition: all 0.4s;
      .top, .bottom {
        transition: all 0.4s cubic-bezier(0.86, 0.18, 0.82, 1.32);
      }
    }
    &.normal-enter, &.normal-leave-to {
      opacity: 0;
      .top {
        transform: translate3d(0, -100px, 0);
      }
      .bottom {
        transform: translate3d(0, 100px, 0);
      }
    }
  }
  .mini-player {
    display: flex;
    align-items: center;
    position: fixed;
    left: 0;
    bottom: 0;
    z-index: 180;
    width: 100%;
    height: 60px;
    background: @color-highlight-background;
    &.mini-enter-active, &.mini-leave-active {
      transition: all 0.4s;
    }
    &.mini-enter, &.mini-leave-to {
      opacity: 0;
    }
    .icon {
      flex: 0 0 40px;
      width: 40px;
      padding: 0 10px 0 20px;
      img {
        border-radius: 50%;
        &.play {
          animation: rotate 10s linear infinite;
        }
        &.pause {
          animation-play-state: paused;
        }
      }
    }
    .text {
      display: flex;
      flex-direction: column;
      justify-content: center;
      flex: 1;
      line-height: 20px;
      overflow: hidden;
      .name {
        margin-bottom: 2px;
        .no-wrap();
        font-size: @font-size-medium;
        color: @color-text;
      }
      .desc {
        .no-wrap();
        font-size: @font-size-small;
        color: @color-text-d;
      }
    }
    .control {
      flex: 0 0 30px;
      width: 30px;
      padding: 0 10px;
      .icon-play-mini, .icon-pause-mini, .icon-playlist {
        font-size: 30px;
        color: @color-theme-d;
      }
      .icon-mini {
        font-size: 32px;
        position: absolute;
        left: 0;
        top: 0;
      }
    }
  }
}

@-webkit-keyframes rotate {
  0% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-moz-keyframes rotate {
  0% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-ms-keyframes rotate {
  0% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(360deg);
  }
}

@-o-keyframes rotate {
  0% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes rotate {
  0% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(360deg);
  }
}

</style>
